Hello, thank you for loving TuneBrowser.
Usually, common composer name will be shown at the top of the album.
This composer name is processed as the tag _ARTCOMP. By the definition of the _ARTCOMP tag, ALBUM ARTIST has priority over COMPOSER. Perhaps, your files are using “Augustin Dumay & Maria Joao Pires” as ALBUM ARTIST , so it is shown at the top of the alubm.